S. Jennifer Panahi

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On September 30, 2025, the United States Court of Appeals for the District of Columbia Circuit (“D.C. Circuit”) vacated and remanded FERC’s order approving a two-tiered fuel rate structure for Antero Resource Corporation’s (“Antero”) usage of Tennessee Gas Pipeline Company, L.L.C.’s (“Tennessee Gas”) Broad Run Expansion Project (“Expansion Project”). The D.C. Circuit held FERC’s approval of the rate structure was arbitrary and capricious because it required Antero to always pay for the highest fuel rates irrespective of the segment’s actual operations.

In the latest chapter in a long-running saga dealing with certain credits for transmission upgrades in the Southwest Power Pool (SPP), on September 18, 2025, FERC directed SPP to submit a compliance filing addressing certain aspects of SPP’s proposed plan (Refund Plan) for unwinding credit payment obligations assessed by SPP.

On August 25, 2025, the Federal Energy Regulatory Commission (“FERC”) granted NextEra Duane Arnold, LLC (“NEDA”) a waiver of certain sections of the Midcontinent Independent System Operator, Inc.’s (“MISO”) tariff to use MISO’s generating facility replacement process for the recommissioning of the Duane Arnold nuclear power facility (“Project”) in Palo, Iowa. The order also extends the Project’s commercial operation date to December 31, 2029.

On July 11, 2025, the D.C. Circuit upheld PJM Interconnection L.L.C.’s (“PJM”) assessment of $12 million in penalties against Energy Harbor, LLC (“Energy Harbor”) for failing to perform when called upon by PJM during a major winter storm in December 2022. The D.C. Circuit held that PJM-approved maintenance at Energy Harbor’s coal-fired generation facility, the W.H. Sammis Plant (“Sammis Plant”), was not the sole cause of the Sammis Plant’s nonperformance, and therefore Energy Harbor was not excepted from penalties under PJM’s Open Access Transmission Tariff (“OATT”).

On June 18, 2025, FERC temporarily raised the cost limits for blanket certificate natural gas pipeline projects constructed and placed into service by May 31, 2027, from $41 million to $61.65 million. Citing what it called a pressing nationwide near-term demand for expanded natural gas transportation capacity and reliability concerns…

On May 15, 2025, the FERC’s Office of Energy Policy and Innovation, in coordination with the Office of Electric Reliability, released their 2025 Summer Energy Market and Electric Reliability Assessment, highlighting key industry insights and challenges for the upcoming summer season, measured from June through September 2025. The report anticipates higher-than-average temperatures across the continental United States, coupled with increased uncertainty from extreme weather events. Load is projected to be higher than in the past four summers, leading to noticeably higher wholesale electricity prices across most regions. Despite these challenges, the North American Electric Reliability Corporation forecasts that all regions will have adequate generating resources to meet expected demand under normal conditions. However, certain areas may face tight generation availability during periods of above-normal electricity demand, low wind and solar output, and wide-area heat events, necessitating operational mitigations to maintain reliability. Overall, the report calls for careful monitoring and management of the electric grid to address these challenges and maintain reliability throughout the summer.

On April 25, 2025, FERC approved two uncontested stipulation and agreements that propose to settle the Natural Gas Act (“NGA”) section 4 general rate cases filed on May 30, 2024, by two interconnected pipelines, Algonquin Gas Transmission, LLC (“Algonquin”) and Maritimes & Northeast Pipeline, L.L.C. (“Maritimes”). Both settlements established a 13.5% return on equity (“ROE”) for the calculation of rates for new incremental expansion projects following the settlements’ effective dates, and for the equity component of Allowance for Funds Used During Construction (“AFUDC”).

On April 11, 2025, FERC issued Order No. 1920-B, which clarified and maintained key requirements from Order No. 1920-A regarding long-term transmission planning and cost allocation. FERC clarified that transmission providers are not obligated to plan for the long-term needs of unenrolled non-jurisdictional transmission providers, but voluntary arrangements are allowed. The order also upheld the requirement for transmission providers to include Relevant State Entities’ agreed-upon cost allocation methods in their compliance filings. Additionally, FERC sustained the consultation requirement with Relevant State Entities before amending cost allocation methods. Lastly, FERC declined to expand the definition of “Relevant State Entity” and rejected certain rehearing requests as procedurally barred. Overall, FERC explained that Order No. 1920-B reinforces the importance of long-term, forward-looking, and comprehensive transmission planning and cost allocation processes to meet the demands of the modern transmission grid. The order was approved by four Commissioners, with Commissioner See not participating.

On March 28, 2025, the D.C. Circuit denied a joint petition for review brought by Healthy Gulf and Sierra Club (together, “Petitioners”) challenging FERC’s grant of a certificate of public convenience and necessity (CPCN) to Driftwood Pipeline LLC (Driftwood) to construct two new natural gas pipelines (the “Project”) in southwestern Louisiana on grounds that FERC’s decision failed to comply with National Environmental Policy Act (NEPA) and the Natural Gas Act (NGA). The D.C. Circuit affirmed FERC’s analyses under NEPA and NGA but declined to address Driftwood’s claim that the Council on Environmental Quality’ (CEQ) regulations implementing NEPA, upon which Petitioners based their arguments, are not judicially enforceable because CEQ lacks authority to promulgate them.

On March 20, 2025, FERC approved Southwest Power Pool, Inc.’s (“SPP”) tariff revisions to incorporate a mark-to-auction collateral requirement for SPP’s Transmission Congestion Rights (“TCR”) market.  In doing so, FERC found the revisions will mitigate market risk caused by market participants’ declining TCR values.  However, the Commission declined SPP’s request to terminate the related ongoing show cause proceeding because the proposed tariff does not fully address the Commission’s concerns.